PVC cable material is a resin based on polyvinyl chloride, adding stabilizer, dioctyl phthalate, diisodecyl phthalate, dioctyl terephthalate, trioctyl metaphenolate and other plasticizers, calcium carbonate and other inorganic fillers, additives and lubricants, after mixing and kneading and extruding particles.
Chinese name
PVC cable materials
additive
Auxiliary and lubricant
Basic resin
Polyvinyl chloride (PVC)
Inorganic filler
Stabilizer, dioctyl phthalate
Environmental classification
Because of the use of stabilizer, plasticizer and various fillers and other added substances in the environmental aspects of the different and different. Generally, it is measured by the detection methods and standards of ROHS or REACH. Divided into environmental protection and non-environmental protection PVC cable materials.
Environmental protection
Environmental protection cable materials, that is, when the cable materials are successfully prepared, they shall be tested on ICP testing equipment according to the detection methods and standards of ROHS or REACH. The content of heavy metals,DEHP, nonylphenol, polybrominated biphenyls and other prohibited substances and controlled substances in all material components shall not contain or be within a certain amount. Due to the different standards and requirements of each country, the corresponding environmental standards are different. Test units are generally measured in PPM.
The stabilizer of environmental protection cable material is generally the use of calcium and zinc stabilizer.
The most important thing for PVC cable materials that meet the REACH standard is that DEHP16 substances cannot be used as plasticizers.
The environmental protection
Non-environmental protection cable materials Non-environmental protection cable materials generally use lead salt as a stabilizer, because it contains heavy metals lead, chromium, cadmium, mercury, barium and other heavy metals, will cause great damage to the environment and human health, and more and more countries restrict or prohibit the use of.
Use classification
PVC cable materials can be divided into:
PVC insulated cable material
PVC sheathed cable material
Flame retardant PVC insulated cable material
Flame retardant PVC sheathed cable material
PVC elastomer cable material
PVC outdoor overhead insulated cable
The production process
PVC cable materials generally use double – step granulation unit. First order for GLS type high speed direction twin-screw extruder, the second order for the GLD series single screw extruder, a double cascade composite unit, basic structure forms: features: will double screw speed, strong mixing with single screw speed, low temperature and weak combined shear properties, foster strengths and circumvent weaknesses, is now the heat-sensitive, shear sensitive material of choice for efficient mixing modification with models. This equipment has the following advantages: excellent mixing effect and easy temperature control. Use less power and footprint. Raw material mixing and granulation process is automatic (automatic line control), reduce personnel operation. This set of equipment does not require special operation technology, the production of high quality products and simple operation. It has excellent security. Easy temperature control, thus reducing raw material damage and deterioration.
PVC production process and technology: metering feed GLS-65 twin screw to the length of 32; Gld-150 single screw length-diameter ratio requirements in 9; 1. The core of the screw should pass the cooling water —- hydraulic plate network changing —– head should be pushed and pulled to blow type head; Do PVC elastomer with this nose is there will be a phenomenon of clay — – — – — the air-filled mill cut — – — – — – the first section of the cyclone separator the second section of the cyclone separator — – — – — – — – — – — extended vibrating screen — bin;
Post time: Aug-11-2022